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TW201024880A - Liquid crystal display and pixel unit thereof - Google Patents

Liquid crystal display and pixel unit thereof Download PDF

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Publication number
TW201024880A
TW201024880A TW97150799A TW97150799A TW201024880A TW 201024880 A TW201024880 A TW 201024880A TW 97150799 A TW97150799 A TW 97150799A TW 97150799 A TW97150799 A TW 97150799A TW 201024880 A TW201024880 A TW 201024880A
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Taiwan
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liquid crystal
electrically connected
switching element
capacitor
sub
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TW97150799A
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Chinese (zh)
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TWI402589B (en
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Wen-Chun Wang
Chien-Ting Chan
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Wintek Corp
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Publication of TWI402589B publication Critical patent/TWI402589B/en

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Abstract

A pixel unit suitable for electrically being connected to a data line and a first and a second scan lines is divided into a first and a second sub-pixel units. The first sub-pixel unit is formed with a first switching device connected to the data line, a first liquid crystal capacitor and a first storage capacitor coupled to the first switching device. The second sub-pixel unit is formed with a second switching device connected to the first switching device, a coupling capacitor, a second liquid crystal capacitor and a second storage capacitor coupled to the second switching device. The coupling capacitor is electrically connected between a first and a second input/output terminal of the second switching device. The control terminals of the first and second switching devices are electrically connected the first and second scan lines, respectively.

Description

201024880 九、發明說明: 【發明所屬之技術領域】 本發明關於-種液晶顯不器及其畫素單元,特別是關於一種畫素單元 的不同區域具有各自的ν-τ特徵曲線之液晶顯示器及其畫素單元。 【先前技術】201024880 IX. Description of the Invention: [Technical Field] The present invention relates to a liquid crystal display and a pixel unit thereof, and more particularly to a liquid crystal display having a respective ν-τ characteristic curve in different regions of a pixel unit and Its pixel unit. [Prior Art]

圖1為習知液晶顯示器的-晝素單元等效電路圖。液晶顯示器101的 -畫素單元110同時具有-第-畫素單元U1及—第二畫素單元112,且 如圖1所示’習知設計利用兩顆薄膜電晶體T1AT2分別控制第一畫素單 :111及第二畫素單it 112的電壓變化,使第一畫素單丨m及第二畫素 單兀112可透過個別的r校正曲線獲得較佳的光學響應。 圖2為示意賴示驅_丨實施赚晶顯示器之驅練構的方塊圖。 如圖2所7F ’細触構1GG包含—薄膜電晶斷列1G2、—第—影像資 料驅動電路1G4、—第二影像資料驅動電路1%、及—掃描信號驅動電路 108。明同時參考圖1及圖2 ’掃描信號驅動電路1⑽產生掃描信號,經 由列電極G1A.G4A減各個_電晶__。影像龍驅動電路ι〇4 依序f生賴各掃描職_像信號,經由行電極dia_d4a及對應第一 晝素早111之薄膜電晶體(例如薄膜電晶體T1)送到第一晝素單元m ; 影像資料驅動電路廳依序產生對應各掃描信號的影像信號,經由行電極 =1B-D4B及對應第二畫素單元112之薄臈電晶軸 第二畫素單元112。 雖然習知設計兩顆薄膜電晶體T1、T2分別控制第—晝素單元⑴ = 112的電壓變化,可於單一液晶結構間隙的設計下獲得良 的“響應’但上述設計需要如圖2所示較複雜的電路架構來實施不同 的r权正曲線’例如需要兩個不同的影像資料驅動電路⑽、伽及兩倍的 6 201024880 行電極’明顯增加元件成本及設計複雜度。 【發明内容】 因此,本發明—實施例之目的在提供一種液晶顯示器及其畫素單元, 畫素單元的不同區域具有各自的ν-τ特徵曲線,獲得以一簡化驅動架構及 較低製造成本提供良好光學響應的效果。 依本發明一實施例提供一種晝素單元適於電連接至一資料線及一第一 g 掃描線及-第二掃描線,此晝素單從含—第—晝素單元及—第二畫素單 元第畫素單元形成有電連接資料線的一第一切換元件、電連接至第一 φ 切換元件之-第-液晶電容及一第—儲存電容。第二畫素單元形成有電連 接第一切換元件的一第二切換元件、一耦合電容及電連接至第二切換元件 之一第二液晶電容及一第二儲存電容。且耦合電容電連接第二切換元件之 一第一輸出入端及一第二輸出入端之間,第一切換元件的控制端及第二切 換元件的控制端分別電連接第一掃描線及第二掃描線。 依本發明一實施例提供一種液晶顯示器,其包含複數掃描線及資料 線;以及複數上述畫素單元。 依本發明一實施例,上述的畫素單元及液晶顯示器中,第一切換元件 〇 之控制端所連接的掃描線及第二切換元件之控制端所連接的掃描線係為相 鄰’較佳地分別為第η條(η$ι ; η為正整數)掃描線及第n-i條掃描線。 - 依本發明一實施例提供一種畫素單元,其包含一第一畫素單元、—雙 ' 向二極體及一第二畫素單元。第一畫素單元形成有一第一切換元件、電連 接至該第一切換元件之一第—液晶電容及一第一儲存電容。第二晝素單元 形成有互相電連接之一第二液晶電容及一第二儲存電容。雙向二極體電連 接於第一液晶電容及該第二液晶電容之間。較佳地雙向二極體電連接於— 第一子畫素電極及一第二子晝素電極間。一實施例中,雙向二極體包含— 7 201024880 第一二極體電晶體及一第二二極體電晶體,且第一二極體電晶體的第二端 及第三端間形成一第一寄生電容;於第二二極體電晶體的第二端及第三端 間形成一第二寄生電容。一實施例中,第一二極體電晶體的第三端電連接 第二畫素單元的第二儲存電容及第二液晶電容;第二二極體電晶體的第三 端電連接於第一晝素單元的第一儲存電容及第一液晶電容。 依本發明一實施例,能夠利用一般的薄膜電晶體製程形成,可獲得使 同一畫素單元具有兩組不同的v-τ特徵曲線的效果。 【實施方式】 圖3為示意地顯示依本發明之一實施例之液晶顯示器的簡圖’圖4為 顯示圖3實施例之液晶顯示器的等效電路圖。 請同時參考圖3及圖4,依本發明一實施例液晶顯示器包含複數晝素 單元10、複數掃描線G及資料線d、共用電極(未圖示)以及液晶層(未圖 不),每一畫素單元10包含一第一薄膜電晶體Ή、及一第二薄膜電晶體T2、 第子里素電極22、一第一子畫素電極24。其中每一個畫素單元10即 例如為一紅色(R)畫素 '綠色(G)晝素或是藍(Β)畫素。 畫素單元10(Pixel unit)分為一第一子畫素單元(flrst sub_pixel unit)11及 一第二子畫素單元12(second sub-pixel unit),第一子畫素單元11上形成有 第—溥臈電晶體Ή、一儲存電容Csl與一液晶電容cicl,液晶電容Clcl 係由第—子畫素電極22與共用電極(未圖示)間隔液晶層(未圖示)形成,且 儲存電各Csl與液晶電容Clcl均電連接至第一薄膜電晶體T1。第二子畫 素單元12上形成有一第二薄膜電晶體T2、一儲存電容Cs2、一液晶電容 C1C2及一耦合電容Cx’液晶電容Clc2係由第二子晝素電極24與共用電極 (未圖示)間隔液晶層(未圖示)开》成’且儲存電容Cs2與液晶電容Clc2均電 連接至'專獏電晶體T2,而耦合電容Cx的兩端電連接於第二薄膜電晶體T2 8 201024880 的源極及汲極之間,並電連接於第一子畫素電極22及第二子畫素電極24。 第一薄膜電晶體τι之閘極電連接此些掃描線G中的一第續'掃描線G(n), 其源極電連接資料線D中的一第„!條資料線D(m),及其汲極電連接第二 薄膜電晶體T2的源極,且第二薄膜電晶體T2之閘極電連接至相鄰掃描線 G⑻之此些掃觀G巾的—第η4條掃描線办丨)。第w條掃描線咖七 為第η條掃描線G⑻壯一級掃描線。亦心掃描訊號係依序先輸入第w - 條掃描線G(n-1)後再輸入第η條掃描線G(n)。 ' 目此’依本實施之設計,藉由調整第二薄膜電晶體T2树大小或搞合 電容Cx的量值’可使同—畫素單元之第—子晝素電極22及第二子畫素電 極24與共同電極電位Vcom間的相位差不同,亦即使同一畫素單元且有兩 組不同的V_T特徵絲的效果。此—特性能夠解決色偏(▲_)現象 及殘影(image_stieking)現象’且亦可細於不同_而獲得不同效果, 舉例而言,可應驗-廣視級晶顯示如提供良好的視角補償效果,或 可應用於-半透式液晶顯示H以改善透射區與反射區賊學匹配。 本發明-實施例係顧-般的薄膜電晶體製程形成耦合電容&,使兩 薄膜電日日體了1及T2在電性連接同—資料線減源的情況下,尚能讓第一 子里素電極22與第二子畫素電極以相對共用電極電位FIG. 1 is an equivalent circuit diagram of a halogen unit of a conventional liquid crystal display. The pixel unit 110 of the liquid crystal display 101 has both a -first pixel unit U1 and a second pixel unit 112, and as shown in FIG. 1 'the conventional design uses two thin film transistors T1AT2 to respectively control the first pixel. The voltage changes of the single: 111 and the second pixel single it 112 enable the first pixel unit m and the second pixel unit 112 to obtain a better optical response through the individual r calibration curves. FIG. 2 is a block diagram showing the driving mechanism of the implementation of the earning display. As shown in Fig. 2, the thin contact structure 1GG includes a thin film electro-disconnection 1G2, a first image data driving circuit 1G4, a second image data driving circuit 1%, and a scanning signal driving circuit 108. Referring to Fig. 1 and Fig. 2', the scanning signal driving circuit 1 (10) generates a scanning signal, and the respective electrodes __ are subtracted by the column electrodes G1A.G4A. The image dragon driving circuit ι〇4 sequentially feeds each scanning job image signal to the first pixel unit m via the row electrode dia_d4a and the thin film transistor corresponding to the first 昼素早111 (for example, the thin film transistor T1); The image data driving circuit hall sequentially generates image signals corresponding to the respective scanning signals, and passes through the row electrodes=1B-D4B and the thin 臈 electro-crystal axis second pixel units 112 corresponding to the second pixel units 112. Although it is conventional to design two thin film transistors T1 and T2 to control the voltage change of the first halogen element (1) = 112, a good "response" can be obtained under the design of a single liquid crystal structure gap, but the above design needs to be as shown in FIG. More complex circuit architectures to implement different r-weight positive curves', for example, require two different image data driving circuits (10), doubling the number of 6 201024880 row electrodes 'significantly increasing component cost and design complexity. The purpose of the present invention is to provide a liquid crystal display and a pixel unit thereof, wherein different regions of the pixel unit have respective ν-τ characteristic curves, thereby obtaining a good optical response with a simplified driving architecture and lower manufacturing cost. According to an embodiment of the present invention, a pixel unit is electrically connected to a data line and a first g scan line and a second scan line, and the pixel unit is from the first-diode element and the first The first pixel unit of the two pixel unit is formed with a first switching element electrically connected to the data line, a first liquid crystal capacitor electrically connected to the first φ switching element, and a first storage capacitor The second pixel unit is formed with a second switching element electrically connected to the first switching element, a coupling capacitor and a second liquid crystal capacitor electrically connected to the second switching element and a second storage capacitor. The first switching input end and the second output input end are respectively connected between the first output end and the second output end of the second switching element, and the control end of the first switching element and the control end of the second switching element are electrically connected to the first scan line and the second scan line, respectively. An embodiment of the present invention provides a liquid crystal display including a plurality of scan lines and data lines, and a plurality of the pixel units. According to an embodiment of the invention, in the pixel unit and the liquid crystal display, the first switching element is controlled. The scanning line connected to the terminal and the scanning line connected to the control end of the second switching element are adjacent 'preferably respectively the nth (n$ι; η is a positive integer) scan line and the nith scan line According to an embodiment of the invention, a pixel unit includes a first pixel unit, a double 'dipole and a second pixel unit. The first pixel unit is formed with a first switching element, The first halogen element is electrically connected to one of the second liquid crystal capacitor and the second storage capacitor. The bidirectional diode is electrically connected to the first liquid crystal capacitor and the first storage capacitor. Preferably, the bidirectional diode is electrically connected between the first sub-pixel electrode and the second sub-pixel electrode. In one embodiment, the bidirectional diode Including - 7 201024880 a first diode transistor and a second diode transistor, and forming a first parasitic capacitance between the second end and the third end of the first diode transistor; A second parasitic capacitance is formed between the second end and the third end of the body transistor. In an embodiment, the third end of the first diode transistor is electrically connected to the second storage capacitor of the second pixel unit and the second The liquid crystal capacitor; the third end of the second diode transistor is electrically connected to the first storage capacitor of the first halogen unit and the first liquid crystal capacitor. According to an embodiment of the present invention, it is possible to form a conventional thin film transistor process, and it is possible to obtain the effect that the same pixel unit has two different sets of v-τ characteristic curves. [Embodiment] Fig. 3 is a schematic view showing a liquid crystal display according to an embodiment of the present invention. Fig. 4 is an equivalent circuit diagram showing a liquid crystal display according to the embodiment of Fig. 3. Referring to FIG. 3 and FIG. 4 simultaneously, a liquid crystal display includes a plurality of pixel units 10, a plurality of scanning lines G and data lines d, a common electrode (not shown), and a liquid crystal layer (not shown). The pixel unit 10 includes a first thin film transistor 及, a second thin film transistor T2, a first sub-core electrode 22, and a first sub-pixel electrode 24. Each of the pixel units 10 is, for example, a red (R) pixel 'green (G) element or blue (Β) pixel. The Pixel unit 10 is divided into a first sub-pixel unit 11 and a second sub-pixel unit. The first sub-pixel unit 11 is formed on the first sub-pixel unit 11 . The first transistor Ή, a storage capacitor Cs1 and a liquid crystal capacitor clcl are formed by a liquid crystal layer (not shown) separated by a first sub-pixel electrode 22 and a common electrode (not shown), and stored. Each of the electric Csl and the liquid crystal capacitor Clcl is electrically connected to the first thin film transistor T1. The second sub-pixel unit 12 is formed with a second thin film transistor T2, a storage capacitor Cs2, a liquid crystal capacitor C1C2, and a coupling capacitor Cx'. The liquid crystal capacitor Clc2 is composed of the second sub-element electrode 24 and the common electrode (not shown). The spacer liquid crystal layer (not shown) is turned on and the storage capacitor Cs2 and the liquid crystal capacitor Clc2 are electrically connected to the 'special transistor T2, and both ends of the coupling capacitor Cx are electrically connected to the second thin film transistor T2 8 The source and the drain of the 201024880 are electrically connected to the first sub-pixel electrode 22 and the second sub-pixel electrode 24. The gate of the first thin film transistor τι is electrically connected to a continuation 'scanning line G(n) of the scan lines G, and the source thereof is electrically connected to a „! ” data line D(m) of the data line D And the drain electrode is electrically connected to the source of the second thin film transistor T2, and the gate of the second thin film transistor T2 is electrically connected to the scan line G of the adjacent scan line G (8) - the nth scan line丨). The wth scan line is the nth scan line G(8) and the first scan line. The heart scan signal is first input to the wth scan line G(n-1) before inputting the nth scan. Line G(n). According to the design of the present embodiment, by adjusting the size of the second thin film transistor T2 tree or fitting the magnitude of the capacitance Cx, the first-pixel element of the same pixel unit can be made. 22 and the second sub-pixel electrode 24 and the common electrode potential Vcom have different phase differences, even if the same pixel unit has two sets of different V_T characteristic wires. This characteristic can solve the color shift (▲_) phenomenon. And the residual image (image_stieking) phenomenon can also be used to achieve different effects, for example, can be fulfilled - wide-view crystal display such as providing good view The compensation effect may be applied to the semi-transparent liquid crystal display H to improve the transmissive area and the reflective area. The present invention-embodiment is a thin film transistor process to form a coupling capacitor & In the case where the body 1 and T2 are electrically connected and the data line is reduced, the first sub-electrode electrode 22 and the second sub-pixel electrode are allowed to have a relative common electrode potential.

Vcom具有二種不 ⑩_電位差’她於f知技術,本發明實補能触少龍線職源的數 量並簡化像素結構的電路。此外,亦可搭配固有製程而不需額外的製造 ' 成本及複雜的驅動架構即可獲得良好的光學響應。 ' 纟於第—軸電晶體12之閘極電連接掃描線G(n.l)且其源極及沒極分 观連_合電容Cx的兩端,因此當上—級掃描線_)被驅動時,能夠 藉由第一薄膜電晶體T2的設置,中和第—子晝素電極^及第二子畫素電 極24之電壓差。尚且,當停止驅動本級掃描線G⑻後,亦能夠提供第二子 畫素電極24放電5^徑’而能夠改善電荷殘留(dc殘留)的問題。 9 201024880 此外’依上述設計’亦具有第二子畫素雜24較不易受_通現象 (feed-through issue )影響的優點。 圖5為顯示依本發明-實施例之液晶顯示^轉效電賴。$素單元 3〇的元件中與畫素單元1G相同的树,使用相同的符號並省姐 說明,以下說明兩者間的差異。 、 請參照圖5,晝素單元30分為一第一子畫素單元31及一第 單元32,第單元31场猶—第—義電雜τι、—齡電容—ω 與-液晶電容Cle卜紅電容咖係由第—子畫素電極(未圖示)與共用電 極(未圖示獅液晶層(未_形成,且儲存電容Csi與液晶電容咖均 電連接至第-薄膜電晶體τ卜第-薄膜電晶體T1的閘極電連接於掃描線 G中的-掃描線G⑻’其源極電連歸料㈣中的―資料❹㈣,# 馨 及極電連接液晶電容咖。第二子晝素單元32上形成有互相電連接的一儲 存電容CS2、-液晶電容Clc2。液晶電容⑽係由第一子晝素電極(未圖示) 與共用電極(未圖不)間隔液晶層(未圖示)形成。且於液晶電容CM及液晶 電容㈤間電連接有-雙向二極體4G,她地於第—子晝素電極及第 晝素電關電連接有雙向二極體4G。雙向二極體4()包含—第―二極體電 晶體m及-第二二極體電晶體D2,且第_二極體電晶體則第一端4ΐι 電連接於第二二極體電晶體D2的第二端422 ;第一二極體電晶體〇ι的第 -端412電連接於第二二極體電晶體〇2的第—端421;第一二極體電晶體 D1的第三端413電連接於第-二極體電晶體m的第-端411及第二子書 素早儿32的儲存電容Cs2及液晶電容Cle2;第二二極體電晶體D2 端则連接於第二二極體電晶體D2的第ι42ι及第—子晝素單㈣ 的儲存電⑽及液晶電容咖。因此,於雙向二極⑽中第—二極 晶體m的第二端412及第三端413間會形成第一寄生電容cgsi;而 二二極體電晶體m的第二端422及第三端423間會形成第二寄生電 201024880Vcom has two kinds of non-10_potential difference, and she knows how to reduce the number of sources of the dragon line and simplify the circuit structure. In addition, it can be combined with the inherent process without the need for additional manufacturing cost and complex drive architecture to achieve good optical response. The gate of the first-axis transistor 12 is electrically connected to the scanning line G(nl) and its source and the terminal are not connected to each other, so when the upper-level scanning line _) is driven The voltage difference between the first sub-halogen electrode and the second sub-pixel electrode 24 can be neutralized by the arrangement of the first thin film transistor T2. Further, when the driving of the scanning line G (8) of the present stage is stopped, the problem that the second sub-pixel electrode 24 is discharged by 5" can be provided, and the charge residual (dc residual) can be improved. 9 201024880 In addition, the 'design according to the above' also has the advantage that the second sub-picture 24 is less susceptible to the feed-through issue. Fig. 5 is a view showing a liquid crystal display according to the present invention. The same tree as the pixel unit 1G in the element of the prime unit 3, the same symbol is used and the sister is explained. The difference between the two is explained below. Referring to FIG. 5, the pixel unit 30 is divided into a first sub-pixel unit 31 and a first unit 32. The unit 31 field is the first---------------------------------------------------- The red capacitor coffee is composed of a first sub-pixel electrode (not shown) and a common electrode (the lion liquid crystal layer is not shown (not formed, and the storage capacitor Csi and the liquid crystal capacitor are electrically connected to the first-film transistor τ). The gate of the first-thin film transistor T1 is electrically connected to the - scan line G(8)' in the scan line G. The source is electrically connected to the material (4) in the material (4), the #馨 and the pole are connected to the liquid crystal capacitor coffee. The second sub-昼A storage capacitor CS2, a liquid crystal capacitor Clc2, which is electrically connected to each other, is formed on the element unit 32. The liquid crystal capacitor (10) is separated from the common electrode (not shown) by a first sub-halogen electrode (not shown) (not shown) Formed and formed between the liquid crystal capacitor CM and the liquid crystal capacitor (5), the bidirectional diode 4G is electrically connected, and the bipolar diode 4G is electrically connected to the first sub-halogen electrode and the third element. The polar body 4() includes a first-diode transistor m and a second diode transistor D2, and the first-dipole transistor has a first end 4ΐ ι is electrically connected to the second end 422 of the second diode transistor D2; the first end 412 of the first diode transistor 电 is electrically connected to the first end 421 of the second diode transistor 〇2; The third end 413 of the first diode transistor D1 is electrically connected to the first end 411 of the first-diode transistor m and the storage capacitor Cs2 and the liquid crystal capacitor Cle2 of the second sub-system 32; the second diode The D2 end of the bulk transistor is connected to the storage electricity (10) of the first and second sub-dipoles (4) of the second diode transistor D2 and the liquid crystal capacitor coffee. Therefore, the second-pole crystal m in the bidirectional diode (10) A first parasitic capacitance cgsi is formed between the second end 412 and the third end 413; and a second parasitic current is formed between the second end 422 and the third end 423 of the diode body m.

Cgs2 ° 本實施例中,利用雙向二極體40來連接第一子畫素電極22及第一子 畫素電極24,而使雙向二極體40之寄生電容Cgsl、Cgs2耦合第— 電極22及第二子畫素電極24,當掃描線G(n)的掃描訊號驅動時,麥,^ 料開始向第-子晝素電極22及第二子晝素電極24充電,而於兩者間^貝 兩個不同電位差。當停止掃描訊號時,雙向二極體4〇將可中和第一 ^ ^ 子晝素 電極22及第二子畫素電極24之電壓差,且能夠提供第二子畫素電極% 一 放電路徑,因此將可以改善殘影現象。依本實施例之設計,亦具有第-子 畫素電極24較不易受到饋通現象(feed-through issue)影響的優點。 此外,依本實施例之設計,尚可透過調整第一及第二二極體電晶體di 及D2的大小;以及寄生電容Cgsl及Cgs2的量值,以使雙向二極體4〇的 放電速率跟第一薄膜電晶體T1之關電流(i〇ff) —致,而能夠有效地降低 閃動(flicker)問題。 以上所述僅為舉例性,而非為限制性者。任何未脫離本發明之精神與 範疇’而對其進行之等效修改或變更,均應包含於後附之申請專利範圍中, 而非限定於上述之實施例。 【圖式簡單說明】Cgs2 ° In this embodiment, the first sub-pixel electrode 22 and the first sub-pixel electrode 24 are connected by the bidirectional diode 40, and the parasitic capacitances Cgsl and Cgs2 of the bidirectional diode 40 are coupled to the first electrode 22 and The second sub-pixel electrode 24, when the scanning signal of the scanning line G(n) is driven, starts to charge the first sub-halogen element electrode 22 and the second sub-halogen element electrode 24, and between the two Two different potential differences. When the scanning signal is stopped, the bidirectional diode 4 中 can neutralize the voltage difference between the first sub-pixel electrode 22 and the second sub-pixel electrode 24, and can provide the second sub-pixel electrode %-discharge path Therefore, it will improve the phenomenon of image sticking. According to the design of this embodiment, the first sub-pixel electrode 24 is also less susceptible to the influence of the feed-through issue. In addition, according to the design of the embodiment, the size of the first and second diode transistors di and D2 and the magnitudes of the parasitic capacitances Cgsl and Cgs2 can be adjusted to make the discharge rate of the bidirectional diode 4〇 The current (i〇ff) of the first thin film transistor T1 is matched, and the flicker problem can be effectively reduced. The above is intended to be illustrative only and not limiting. Equivalent modifications or variations of the present invention are intended to be included within the scope of the appended claims. [Simple description of the map]

圖1為習知液晶顯示器之一畫素單元的等效電路圖。 圖2為示意地顯示驅動圖1實施例液晶顯示器之驅動架構的方塊圖。 圖3為示意地顯示依本發明之一實施例之液晶顯示器的簡圖。 圖4為顯示圖3實施例之液晶顯示器的等效電路圖。 圖5為顯示依本發明一實施例之液晶顯示器的等效電路圖。 【主要元件符號說明】 10'30畫素單元 11 '31 第一子晝素單元 201024880 12、32 第二子畫素單元 22 第一子晝素電極 24 第二子晝素電極 40 雙向二極體 411 第一二極體電晶體的第一端 412 第一二極體電晶體的第二端 413 第一二極體電晶體的第三端 ' 421 第二二極體電晶體的第一端 φ 422 第二二極體電晶體的第二端 423 第二二極體電晶體的第三端1 is an equivalent circuit diagram of a pixel unit of a conventional liquid crystal display. 2 is a block diagram schematically showing the driving architecture for driving the liquid crystal display of the embodiment of FIG. 1. Fig. 3 is a schematic view schematically showing a liquid crystal display according to an embodiment of the present invention. 4 is an equivalent circuit diagram showing a liquid crystal display of the embodiment of FIG. 3. FIG. 5 is an equivalent circuit diagram showing a liquid crystal display according to an embodiment of the present invention. [Description of main component symbols] 10'30 pixel unit 11 '31 first sub-cell unit 201024880 12, 32 second sub-pixel unit 22 first sub-halogen electrode 24 second sub-halogen electrode 40 bidirectional diode 411 a first end of the first diode transistor 412 a second end of the first diode transistor 413 a third end of the first diode transistor 421 a first end of the second diode transistor φ 422 second end of the second diode transistor 423 third end of the second diode transistor

Cgsl ' Cgs2 寄生電容 Clcl、Clc2 液晶電容 Csl、Cs2 儲存電容Cgsl ' Cgs2 parasitic capacitance Clcl, Clc2 liquid crystal capacitor Csl, Cs2 storage capacitor

Cx 耦合電容 D,D(m) 資料線 D1 第一二極體電晶體 φ D2 第二二極體電晶體 行電極 D1A、D2A、D3A、D4A、DIB、D2B、D3B、D4B • G, G(n) 掃描線 、 G1A、G2A、G3A、G4A 列電極 T1第一薄膜電晶體 T2 第二薄膜電晶體 Vcom 共用電極電位 12Cx coupling capacitor D, D(m) data line D1 first diode transistor φ D2 second diode transistor row electrode D1A, D2A, D3A, D4A, DIB, D2B, D3B, D4B • G, G ( n) Scan line, G1A, G2A, G3A, G4A column electrode T1 first thin film transistor T2 second thin film transistor Vcom common electrode potential 12

Claims (1)

201024880 十、申請專利範圍: 1·種晝素單元’適於電連接至—資料線及—第—掃描線及一第二掃 描線,該畫素單元包含: 第一子畫素單元’其形成有電連接該資料線的__第一切換元 件電連接至該第-切換元件之—第一液晶電容及一第一儲存電容; 以及 一子畫素單元,其形成有電連接該第一切換元件的一第二 ❹ 切換元件、-麵合電容及電連接至該第二切換元件之一第二液晶電容 及一第二儲存電容; 其中言編合電容電連接該第二切換元件之一第一輸出入端及一第二 該第一切換元件的控制端及該第二切換元件的控制端相 電連接該第一掃描線及該第二掃描線。 2.如申請專利範圍第丨項所述 二掃描線係為相鄰。 和疋其中該第—掃描線及該第 如中請專利範圍第μ所述之畫素料,其中該第—及該第二切換 讀/刀別由-第-及—第二薄膜電晶體所構成,雜合電容電 、 薄膜電晶體之源極及汲極。 弟― 4·如申請專利細第3項所述之晝料元,其中該第—薄膜電 源極電連接該資料線;該第一_電晶紅祕電連接㈣二薄^曰 的源極。 & 5·如申請專利範圍第4項所述之畫素單元,其中該第—液晶電容 一第-:晝素電極及-共用電極間隔—液晶層形成,且該第二液晶電容 由一第二子畫素電極及該共用電極間隔一液晶層形成。 ’、 6_ —種液晶顯示器,包含: 13 201024880 複數掃描線及複數資料線,該些掃描線及該些資料線所圍成的區 域定義出複數畫素單元,各該晝素單元區分為: -第-子畫素單元’其形成有電連接該些資料線其一的一 第-切換元件、電連接至該第—切換元件之—第—液晶電容及一第一 儲存電容;以及 一第二子畫素單元,其形成有電連接該第一切換元件的一 . 第二切換元件、—麵合電容及電連接至該第二切換元件之-第二液晶 電容及一第二儲存電容; Ο 其中該_合電容電連接該第二切換元件之-第-輸出人端及-第二輸 出入端之間;該第-切換元件之控制端連接至第n條(似;η為正整數) 掃描線,該第二切換元件之控制端連接至第n-1條掃描線。 7_如申請專利範圍第6項所述之液晶顯示器,其中該第—及該第二切 換元件刀別由-第一及-第二薄膜電晶體所構成,該耗合電容電連接該第 一薄膜電晶體之源極及没極。 8.如申明專利範圍第7項所述之液晶顯示器,其中該第一薄膜電晶體 之源極電連接對應之該資料線,該第—薄膜電晶體之及極電連接該第二薄 Q 膜電晶體的源極。 9·如申sf專利範圍第8項所述之液晶顯示器,其中該第—液晶電容係 由第子畫素電極及-共用電極間隔-液晶層形成,且該第二液晶電容 、 係由一第二子晝素電極及一共用電極間隔一液晶層形成。 10· 一種畫素單元,包含: 一第一子晝素單元,其形成有一第一切換元件、電連接至該第 一切換元件之一第一液晶電容及一第一儲存電容; 一第二子畫素單元,其形成有互相電連接之一第二液晶電容及 14 201024880 一第二儲存電容;以及 一雙向二極體,電連接於該第一液晶電容及該第二液晶電容之 間。 11. 如申請專利範圍第10項所述之晝素單元,其中該雙向二極體包含 一第一二極體電晶體及一第二二極體電晶體,且該第一二極體電晶體的第 一端電連接於該第二二極體電晶體的第二端;該第一二極體電晶體的第二 端電連接於該第二二極體電晶體的第一端;該第一二極體電晶體的第三端 電連接於該第一二極體電晶體的第一端;該第二二極體電晶體的第三端電 連接於該第二二極體電晶體的第一端, 藉以於該第一二極體電晶體的第二端及第三端間形成一第一寄生電 容;於該第二二極體電晶體的第二端及第三端間形成一第二寄生電容。 12. 如申請專利範圍第11項所述之晝素單元,其中該第一二極體電晶 體的第三端電連接該第二子晝素單元的該第二儲存電容及該第二液晶電 容;該第二二極體電晶體的第三端電連接於該第一子晝素單元的該第一儲 存電容及該第一液晶電容。 13. 如申請專利範圍第12項所述之畫素單元,其中該第一液晶電容係 由一第一子晝素電極及一共用電極間隔一液晶層形成,且該第二液晶電容 係由一第二子晝素電極及一共用電極間隔一液晶層形成。 14. 如申請專利範圍第10項所述之晝素單元,其中該第一切換元件由 一第一薄膜電晶體所構成。 15. 如申請專利範圍第14項所述之畫素單元,其中該雙向二極體的放 電速率相等於該第一薄膜電晶體之關電流。201024880 X. Patent application scope: 1. The seed unit is adapted to be electrically connected to the data line and the first scan line and a second scan line. The pixel unit comprises: a first sub-pixel unit a first switching element electrically connected to the data line is electrically connected to the first liquid crystal capacitor and a first storage capacitor of the first switching element, and a sub-pixel unit formed with an electrical connection a second switching element of the component, a surface capacitance, and a second liquid crystal capacitor and a second storage capacitor electrically connected to the second switching element; wherein the capacitor is electrically connected to the second switching component An input end and a second control end of the first switching element and a control end of the second switching element are electrically connected to the first scan line and the second scan line. 2. The two scanning lines are adjacent as described in the scope of the patent application. And the first scan line and the photo material of the first aspect of the patent application, wherein the first and the second switching read/cut are performed by the -first and second thin film transistors It consists of a hybrid capacitor, a source and a drain of a thin film transistor.弟 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 < 5, wherein the pixel unit of claim 4, wherein the first liquid crystal capacitor - the: - germanium electrode and the common electrode spacing - liquid crystal layer are formed, and the second liquid crystal capacitor is formed by a The two sub-pixel electrodes and the common electrode are formed by a liquid crystal layer. ', 6_ - a liquid crystal display, comprising: 13 201024880 a plurality of scan lines and a plurality of data lines, the scan lines and the area enclosed by the data lines define a plurality of pixel units, each of the pixel units being divided into: - The first sub-pixel unit is formed with a first switching element electrically connecting one of the data lines, a first liquid crystal capacitor electrically connected to the first switching element, and a first storage capacitor; and a second a sub-pixel unit formed with a second switching element electrically connected to the first switching element, a surface capacitance and a second liquid crystal capacitor electrically connected to the second switching element and a second storage capacitor; Wherein the _ capacitance is electrically connected between the first output terminal and the second output terminal of the second switching element; the control end of the first switching element is connected to the nth (like; η is a positive integer) A scan line, the control end of the second switching element is connected to the n-1th scan line. The liquid crystal display of claim 6, wherein the first and the second switching element are formed by a first and a second thin film transistor, and the consumable capacitor is electrically connected to the first The source and the immersion of the thin film transistor. 8. The liquid crystal display according to claim 7, wherein the source of the first thin film transistor is electrically connected to the data line, and the first thin film transistor is electrically connected to the second thin Q film. The source of the transistor. The liquid crystal display of claim 8, wherein the first liquid crystal capacitor is formed by a first sub-pixel electrode and a common electrode spacing-liquid crystal layer, and the second liquid crystal capacitor is The diterpenoid electrode and a common electrode are formed by a liquid crystal layer. 10. A pixel unit, comprising: a first sub-cell unit, formed with a first switching element, electrically connected to one of the first switching element, a first liquid crystal capacitor and a first storage capacitor; The pixel unit is formed with a second liquid crystal capacitor electrically connected to each other and 14 a second storage capacitor; and a bidirectional diode electrically connected between the first liquid crystal capacitor and the second liquid crystal capacitor. 11. The halogen unit according to claim 10, wherein the bidirectional diode comprises a first diode transistor and a second diode transistor, and the first diode transistor The first end is electrically connected to the second end of the second diode transistor; the second end of the first diode transistor is electrically connected to the first end of the second diode transistor; a third end of the diode body is electrically connected to the first end of the first diode transistor; a third end of the second diode transistor is electrically connected to the second diode transistor a first end, wherein a first parasitic capacitance is formed between the second end and the third end of the first diode transistor; and a second end and a third end are formed between the second end and the third end of the second diode transistor The second parasitic capacitance. 12. The pixel unit of claim 11, wherein the third end of the first diode transistor is electrically connected to the second storage capacitor and the second liquid crystal capacitor of the second sub-cell unit The third end of the second diode transistor is electrically connected to the first storage capacitor of the first sub-cell unit and the first liquid crystal capacitor. 13. The pixel unit of claim 12, wherein the first liquid crystal capacitor is formed by a first sub-halogen electrode and a common electrode separated by a liquid crystal layer, and the second liquid crystal capacitor is The second sub-tenoxine electrode and a common electrode are formed by a liquid crystal layer. 14. The halogen unit of claim 10, wherein the first switching element is comprised of a first thin film transistor. 15. The pixel unit of claim 14, wherein the bidirectional diode has a discharge rate equal to the off current of the first thin film transistor.
TW97150799A 2008-12-26 2008-12-26 Liquid crystal display and pixel unit thereof TWI402589B (en)

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Cited By (2)

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TWI407222B (en) * 2010-07-20 2013-09-01 Au Optronics Corp Pixel array, polymer stablized alignment liquid crystal display panel, and pixel array driving method
CN103439843A (en) * 2013-04-12 2013-12-11 友达光电股份有限公司 Pixel structure

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KR100741965B1 (en) * 2003-11-29 2007-07-23 삼성에스디아이 주식회사 Pixel circuit and driving method of display device
TWI264593B (en) * 2005-08-12 2006-10-21 Au Optronics Corp Pixel structure and controlling system thereof
JP4571845B2 (en) * 2004-11-08 2010-10-27 シャープ株式会社 Substrate for liquid crystal display device, liquid crystal display device including the same, and driving method thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI407222B (en) * 2010-07-20 2013-09-01 Au Optronics Corp Pixel array, polymer stablized alignment liquid crystal display panel, and pixel array driving method
CN103439843A (en) * 2013-04-12 2013-12-11 友达光电股份有限公司 Pixel structure
TWI497180B (en) * 2013-04-12 2015-08-21 Au Optronics Corp Pixel structure
CN103439843B (en) * 2013-04-12 2016-01-20 友达光电股份有限公司 Pixel structure

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